A young man named Kengo Kosaka suffers from extreme mysophobia, or fear of dirtiness. Due to his compulsive disorder, he is unable to maintain a relationship with anyone. Kengo is also a lonely young man. Meanwhile, high school student Hijiri Sanagi has scopophobia, or fear of being stared at. Because of this fear, she refuses to go to school. Both Kengo and Hijiri do not expect to find love with another person, but they meet and fall in love.